This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -2 |
| 2 | 1 |
| 3 | -4 |
| 4 | -4 |
| 5 | 1 |
| 6 | -26 |
| 7 | -8 |
| 8 | -6 |
| 9 | 1 |
| 10 | -262 |
| 11 | -52 |
| 12 | -14 |
| 13 | -8 |
| 14 | 1 |
| 15 | -3482 |
| 16 | -524 |
| 17 | -102 |
| 18 | -22 |
| 19 | -10 |
| 20 | 1 |
| 21 | -56902 |
| 22 | -6964 |
| 23 | -1130 |
| 24 | -184 |
| 25 | -32 |
| 26 | -12 |
| 27 | 1 |
| 28 | -1099514 |
| 29 | -113804 |
| 30 | -16326 |
| 31 | -2304 |
| 32 | -306 |
| 33 | -44 |
| 34 | -14 |
| 35 | 1 |
| 36 | -24494422 |
| 37 | -2199028 |
| 38 | -287882 |
| 39 | -37224 |
| 40 | -4326 |
| 41 | -476 |
| 42 | -58 |
| 43 | -16 |
| 44 | 1 |
| 45 | -617906906 |
| 46 | -48988844 |
| 47 | -5969382 |
| 48 | -727928 |
| 49 | -78114 |